<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        img{
            width: 590px;
            height: 280px;
        }
        img:hover{
            box-shadow: 3px 3px 3px red, -3px -3px 3px red;
        }
    </style>
</head>
<body>
<img src="daling/images/index/main-must-1.jpg" alt="">
</body>
</html>